/Engine/Plugins/Runtime/RigVM/Source/RigVM/Public/RigVMCore/RigVM.h
Add a function for execute instructions to this VM. Execute instructions can then refer to the function by index.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)() virtual int32 AddRigVMFunction ( [UScriptStruct](API\Runtime\CoreUObject\UObject\UScriptStruct) * InRigVMStruct, const [FName](API\Runtime\Core\UObject\FName) & InMethodName )